I doubt that Natale was the real boss. Merlino was made in the 1992 and after Stanfa went to jail in the middle 1990s he was the real Philadelphia Mafia Boss. For the 5 family Amuso and Gotti was made in the same times (1977) so less ten to soldier to boss.
Patriarca jr was also made in the late 1970s (1978 if I well remember) so 6 years.